Algorithm 1 Calculating the center and maximum radius of the palm region

Input: Interior point set $mHand$ and contour point set $mContour$ Output: The radius $R_0$ and center of the palm center $M_0$ Begin   Step1: Set $R_0=0$ and $M_0=[]$ initially.    Step2: For one point in $mHand$, compute its distances from all the points in $mContour$.   Step3: Find the minimum distance value, update it as $R_0$ and the corresponding point as $M_0$ if it is larger than $R_0$.    Step4: Go to Step2 and repeat until all the points in $mHand$ are iterated.    Step5: Finally, the $R_0$ and $M_0$ are obtained as the radius of the inscribed circle of the palm region and its center. End